DDC/CI not working on Intel integrated GPU

[loshvitalik]

Hi everyone!

All relevant specs: i5-9600K CPU, Gigabyte B365M D3H mb, 3 displays: one DVI, one HDMI thru a DP adapter (doesn't make a difference if I use HDMI directly), one HDMI TV. Previously used a MSI GTS 450 GPU (using otly 2 displays at a time), switched to iGPU. The display that I'm trying to control from Windows is AOC M2470SWH, the software is called AOC i-Menu.

When I was using a GTS 450, the monitor control software was working fine, but when I connected the same display to iGPU, now the software does detect the display, but says that DDC/CI is not supported and is not able to control monitor settings. Is there some kind of BIOS/Intel graphics control panel setting that I should enable? My UHD 630 iGPU is listed as supported on Intel website.

For the record, I have an AMD PC nearby and its integrated graphics does work with a Dell DDC/CI display out of the box.